Features and Usage of Stainless Steel Three-Way Ball Valve

The structural characteristics of the three-way ball valve:

1. Open and close without friction: completely solve the problem of traditional valves affecting the sealing due to mutual friction of the sealing surfaces;

2. Top-mounted structure: The valve installed on the pipeline can be directly inspected and repaired online, which can effectively reduce device parking and reduce costs. This kind of valve should usually be installed horizontally in the pipeline;

3. Single valve seat design: eliminates the problem that the medium in the valve cavity will affect the safety of use due to abnormal pressure rise;

4. Low torque design: The valve stem with special structure design can be opened and closed easily with only a small handle;

5. Wedge-shaped sealing structure: The valve relies on the mechanical force provided by the valve stem to press the ball wedge on the valve seat for sealing, so the sealing performance of the valve is not affected by changes in pipeline pressure, and the sealing performance is reliably guaranteed under various working conditions ;

6. Self-cleaning structure of the sealing surface: When the ball tilts away from the valve seat, the fluid in the pipeline will evenly pass through the sealing surface of the ball 360°, which not only eliminates the partial washing of the valve seat by the high-speed fluid but also washes away Accumulation on the sealing surface to achieve the self-cleaning purpose.

Stainless steel three-way ball valve has the following advantages:

1. Small fluid resistance. Its resistance coefficient is equal to the resistance coefficient of a pipe section of the same length;

2. Simple structure, small size, light weight, compact, and reliable. At present, the sealing surface materials of ball valves have been widely used in plastics, with good sealing performance, and have been widely used in vacuum systems;

3. Convenient operation, rapid opening and closing, only need to rotate 90° from fully open to fully closed, which is convenient for remote control; convenient maintenance, simple ball valve structure, generally movable sealing rings, easy disassembly, and assembly;

4. When fully opened or fully closed, the sealing surface of the ball and valve seat is isolated from the medium. When the medium passes, the medium will not cause corrosion of the valve sealing surface;

5. It has a wide range of applications, ranging from several millimeters to several meters in diameter, and can be applied from high vacuum to high pressure.

Three-Way Ball Valve

The installation and maintenance of stainless steel three-way ball valve should pay attention to the following matters:

The position where the valve handle rotates should be reserved; it cannot be used for throttling; the ball valve with the transmission mechanism should be installed vertically.

Working principle of stainless steel three-way ball valve:

Relying on the rotary valve to make the valve unblocked or blocked, the ball valve switch is light in weight, small in size and can be made into a large diameter. The sealing is reliable, the structure is simple, and it is easy to maintain. The sealing surface and the spherical surface are often sealed and not easily eroded by the medium. It has been widely used in various industries.

1. Opening process:

In the closed position, the ball is pressed against the valve seat by the mechanical pressure of the valve stem. When the handwheel rotates counterclockwise, the valve stem moves in the opposite direction. The angular plane at the bottom separates the ball from the valve seat, and the stem continues to lift. It interacts with the guide pin in the spiral groove of the valve stem so that the ball starts to rotate without friction until it reaches the fully open position. The valve stem is raised to the limit position and the ball rotates to the fully open position.

2. Closing process:

When closing, turn the handwheel clockwise, the valve stem begins to drop so that the ball leaves the valve seat and start to rotate, continue to rotate the handwheel, the valve stem is under the action of the guide pin embedded in the upper spiral groove so that the valve stem and the ball at the same time Rotate 90°. When it is about to close, the ball has rotated 90° without contact with the valve seat. In the last few turns of the handwheel, the angular plane at the bottom of the valve stem mechanically wedges the ball to make it tightly pressed. On the valve seat to achieve a complete seal.

The above is some content about the stainless steel tee. I hope everyone can have a better understanding and understanding of the tee. We are the ball valve manufacturer. If you are interested in our products, please feel free to contact us.